From: =?UTF-8?q?Toke=20H=C3=B8iland-J=C3=B8rgensen?= <toke@redhat.com>
Date: Fri, 4 Oct 2019 17:34:44 +0200
Subject: libbpf: Add cscope and tags targets to Makefile
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Patch-mainline: v5.5-rc1
Git-commit: a9eb048d5615152dc4b8aedb7e704a4e59bc2205
References: bsc#1155518
Using cscope and/or TAGS files for navigating the source code is useful.
Add simple targets to the Makefile to generate the index files for both
tools.
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Tested-by: Andrii Nakryiko <andriin@fb.com>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20191004153444.1711278-1-toke@redhat.com
Acked-by: Gary Lin <glin@suse.com>
---
tools/lib/bpf/.gitignore | 3 +++
tools/lib/bpf/Makefile | 12 +++++++++++-
2 files changed, 14 insertions(+), 1 deletion(-)
--- a/tools/lib/bpf/.gitignore
+++ b/tools/lib/bpf/.gitignore
@@ -3,3 +3,6 @@ libbpf.pc
FEATURE-DUMP.libbpf
test_libbpf
libbpf.so.*
+TAGS
+tags
+cscope.*
--- a/tools/lib/bpf/Makefile
+++ b/tools/lib/bpf/Makefile
@@ -139,6 +139,8 @@ LIB_TARGET := $(addprefix $(OUTPUT),$(LI
LIB_FILE := $(addprefix $(OUTPUT),$(LIB_FILE))
PC_FILE := $(addprefix $(OUTPUT),$(PC_FILE))
+TAGS_PROG := $(if $(shell which etags 2>/dev/null),etags,ctags)
+
GLOBAL_SYM_COUNT = $(shell readelf -s --wide $(BPF_IN_SHARED) | \
cut -d "@" -f1 | sed 's/_v[0-9]_[0-9]_[0-9].*//' | \
awk '/GLOBAL/ && /DEFAULT/ && !/UND/ {print $$8}' | \
@@ -271,7 +273,7 @@ clean:
-PHONY += force elfdep bpfdep
+PHONY += force elfdep bpfdep cscope tags
force:
elfdep:
@@ -280,6 +282,14 @@ elfdep:
bpfdep:
@if [ "$(feature-bpf)" != "1" ]; then echo "BPF API too old"; exit 1 ; fi
+cscope:
+ ls *.c *.h > cscope.files
+ cscope -b -q -I $(srctree)/include -f cscope.out
+
+tags:
+ rm -f TAGS tags
+ ls *.c *.h | xargs $(TAGS_PROG) -a
+
# Declare the contents of the .PHONY variable as phony. We keep that
# information in a variable so we can use it in if_changed and friends.
.PHONY: $(PHONY)